Power transmission coupling



FIG. 1 is a perspective view of a power transmission coupling showing my new design;

FIG. 2 is a front view thereof, a back view being a mirror image thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a cross-sectional view thereof taken along the line VII—VII in FIG. 2;

FIG. 8 is a cross-sectional view thereof taken along the line VIII—VIII in FIG. 2; and,

FIG. 9 is an illustrative longitudinal cross-sectional view showing the power transmission coupling in use, with a drive shaft and a driven shaft being shown in broken lines and forming no part of the claimed design.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a power transmission coupling, as shown and described. 